• Journal of Animal Science and Technology
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• 제57권10호
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• pp.37.1-37.9
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• 2015

This study was performed to investigate the effects of the low plane of nutrition on growth and meat quality of finishing pigs. A total of 136 crossbred barrows and gilts weighing approximately 55 kg were allotted to 8 pens, with 17 animals housed per pen, in a 2 (sex) ${\times}$ 2 (nutrition) factorial arrangement of treatments. The animals allotted to a medium plane of nutrition (MPN) received a finisher phase 1 (P1) diet containing 3.47 Mcal DE/kg and 0.92 % lysine and a P2 diet containing 3.40 Mcal DE/kg and 0.78 % lysine for 35 d and 36/43 d, respectively; the animals allotted to the low plane of nutrition (LPN) received only a P2 diet containing 3.00 Mcal DE/kg and 0.68 % lysine 7 d longer than MPN. The animals were slaughtered following the feeding trial, after which the loin, ham, Boston butt, and belly were taken from a total of 24 animals, with the average live weight being 120 kg, and their physicochemical and sensory quality traits were analyzed. Average daily gain did not differ between MPN and LPN during either P1 or P2. Average daily feed intake was greater (P < 0.05) in LPN vs. MPN during both phases whereas the opposite was true for the gain:feed ratio. Backfat thickness (BFT) was less in LPN vs. MPN (21.7 vs. 24.1 mm at 115 kg). The plane of nutrition influenced no effect on any of the physicochemical characteristics of fresh loin, ham, or Boston butt analyzed in the present study. Fresh hams from LPN exhibited superior aroma and odor scores than those from MPN; however, sensory quality traits were not influenced by the plane of nutrition in other fresh primal cuts or cooked meat. Instead, fresh primal cuts and cooked meat from gilts rendered superior physicochemical characteristics and sensory scores, respectively, than those from barrows. Results suggest that the low plane of nutrition may be useful to increase the slaughter weight of finishing pigs with a moderately high BFT by virtue of its BFT-lowering effect with or without exerting a slightly positive influence on pork quality.

• 한국유기농업학회지
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• 제8권3호
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• pp.111-120
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• 2000

본 시험에서는 왕겨, 쌀겨, 비지, 잔반을 원료로 하여 각각 26, 26, 34, 14%를 혼합하여 발효시켜 농후사료와 급여비율을 달리하여 재래산양에게 급여하였다. 시험사료는 4종으로 각 사료별 발효사료:농후사료 배합비율은 A 80 : 20, B 70 : 30, C 50 : 40 및 D 50 : 50%로 하여 처리구별로 급여하였다. 발효사료를 이용한 재래산양의 사료 섭취량, 소화율 및 질소 축적율을 조사하였으며 또한 재래산양의 증체 시험을 45일간 실시하여 재래산양 사료로서의 농산부산물 발효사료 가치를 조사하였다. 1. 본 실험사료의 화학적 성분으로는 조단백질 함량이 A, B, C 및 D구에서 각각 13.73, 13.78, 14.45, 15,14%이었으며 조지방과 조섬유 함량은 A구에서 각각 8.66 및 27.82%로 전 처리구중 가장 높았다. 2. 처리수준별 건물사료 섭취량은 362.06∼329.12g/d로서 A구(발효사료 : 배합사료, 80 : 20)와 C구(발효사료 : 배합사료, 60 :40)에서 각각 362.06 및 358.49g/d로서 B구(329.12g/d)와 D구(349.72g/d)에 비하여 유의성이 인정되었다(P<0.05). 영양소별 섭취량으로 조단백질 및 조지방은 처리구간 차이가 없었으나(P>0.05), 조섬유 섭취량은 A구가 101.47g/d로 B, C 및 D구보다 현저히 높아 유의차를 보였고(P<0.05), 조회분 섭취량도 A구가 28.51g/d로 B, C 및 D구보다 현저히 높았다(P<0.05). 3. 처리구간 건물소화율은 68.81∼53.58%수준으로 발효사료가 60%함유된 사료를 급여한 C구에서 가장 높은 경향을 보였으며, 발효사료 함유율이 80%인 A구에서 가장 낮았다 (P<0.05), 조단백질 소화율도 A구에서 59.85%로 B, C 및 B구보다 현저히 낮아 유의차가 인정되었다(P<0.05). 그러나 조지방의 소화율은 처리간 큰 차이를 보이지 않았다. 조섬유 소화율은 A구와 C구에서 각각 56.82%와 58.54%를 나타내어 발효사료 함유량이 높아도 조섬유 소화율이 저하하지 않는 것을 알 수 있었다. 4. 질소 섭취량은 8.47∼7.22g/d로서 C구에서 8.47g/d로 가장 높았으나 질소 축적율은 D구에서 32.78%로 가장 높게 나타났다. D구는 배합사료 급여 비율이 50%로 처리구중 조단백질 함량이 제일 높았고 분 질소 배설량이 적어 질소 축적율이 향상되었다고 P<0.05) 사료된다. 뇨 질소 배설량은 3.43∼5.91g/d로 전 처리구간 비슷한 경향을 보였다. 5. 증체 시험 결과를 보면 사료 섭취량은 752.22∼788.20g으로 처리구간 비슷하였으나, 일당 증체량은 발효사료1배합사료 비율이 50 : 50%인 D구에서 88.89g/d으로 가장 높았고, A, B, C구는 체중이 감소하거나 증체가 거의 이루어지지 않았는데, 개체별로 일부 설사에 의한 체중감소 현상이 일어났기 때문으로 사료된다. 그러나 설사를 하지 않은 정상적인 것들만 비교하여 볼 때, 증체량은 배합사료 급여 비율이 높을수록 증가하는 경향을 뚜렷이 보여 주었다(C : 71.11, D : 88.89g/d). 6. 왕겨, 쌀겨, 비지, 남은 음식물 등을 이용한 발효사료를 배합사료와 함께 혼합 비율을 달리하여 재래산양에게 급여하였을 때, 사료 섭취량과 소화율은 발효사료 60%, 배합사료 40%를 급여하였을 때 가장 높게 나타나 농산 부산물을 발효시킴으로써 기호성 및 소화율이 향상될 수 있다는 점을 시사하였다. 그러나 발효사료는 배합사료만큼은 체내 이용성이 뛰어나지 못하여 배합사료 50%로 배합사료 혼합 비율을 높인 구보다는 증체량이 떨어졌고 질소 축적율도 낮게 나타났다. 결론적으로 재래산양에서 배합사료와 함께 급여하는 발효사료의 적정 급여 비율을 50∼60% 정도로 할 때 사료의 이용 효율이 양호할 것으로 사료되나 여름철과 같은 고온 시기에는 변질리 가능성이 있어 설사를 유발할 수 있으므로 이에 대한 추가 연구가 필요하다고 사료된다.

• Asian-Australasian Journal of Animal Sciences
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• 제16권11호
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• pp.1572-1576
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• 2003

A growth trial of 180 days was conducted on 18 crossbred calves (6-9 months, $73.48{\pm}6.52kg)$ by randomly allotting to two complete diets and a conventional diet (6 in each group). The complete diets were formulated containing 40 per cent cotton straw, one processed in mash form and other subjected to expander-extruder pelletization (EEP). These two complete diets were compared with conventional system of feeding under which concentrate mixture and cotton straw were fed separately in a 60:40 ratio. The calves on EEP complete diet consumed more (p<0.01) DM in comparison to other two groups. The DMI per 100 kg body weight was similar among all the diets. The ADG was significantly (p<0.01) higher in calves fed EEP complete diets (815.4 g) followed by mash (627.0 g) in comparison to conventional diet (464.9 g). The DM intake per kg metabolic body weight was higher (p<0.01) on complete diet than conventional diet. The intakes of DCP (p<0.05), TDN (p<0.01), and ME (p<0.01) per kg metabolic body weight were significantly higher on EEP complete diet in comparison to mash and conventional diet. The water intake per kg DM intake was comparable among all the diets. The efficiency of DM utilisation was higher p (<0.05) on EEP complete diet (5.84) in comparison to conventional diet (7.41), whereas on mash diet it was intermediate (6.68). The efficiency of DCP utilization was similar in mash and EEP complete diet fed groups, which was higher (p<0.05) than that of the conventional diet. Expander-extrusion though increased the cost of production it reduced the cost of feed per unit live weight gain by 12.28% in comparison to its mash form and by 16.76% when concentrate and cotton straw were fed separately. The results indicated that blending of cotton straw along with concentrates in a complete diet increased the palatability of the straw in comparison to conventional system and expander extruder processing of cotton straw based complete diet gave better growth performance and may form an economic ration for growing crossbred calves.

• 한국가금학회지
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• 제9권2호
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• pp.63-101
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• 1982

육용계에서 가식육량을 효과적으로 추정할 수 있는 방법을 구명코자 White Cornish종과 S. C. W. Leghorn종. 그리고 이 두 품종의 상반교잡종을 각각 120수씩 계 480수를 공시하여 체중. 부위별 가식육 및 체형의 변화, 이들 형질에 발현된 잡종강세와 반성유전효과 및 화학적 조성분함량을 조사하고. 성장단계별 가식육량을 추정한 결과를 요약하면 다음과 같다. 1. W. Cornish종의 8주시 체중 및 사료요구율과 폐사율을 보면 각각 1,818.8$\pm$47.7g와 2.24 및 3.30%였고 S. C. W. Leghorn종에선 각각 667.8$\pm$28.9g와 3.28 및 2.50%였으며 잡종들의 능력은 이 두 품종의 중간정도로 정상발육을 하였다. 2. 체중에 있어서 계종간 차이는 2주령부터 유의성이 인정되었고. 성장곡선의 회귀방정식에서 성장속도를 표시하는 회귀계수률 보면 W. Cornish종( $b_{cc}$ =1,578)은 S. C. W. Leghorn종 ( $b_{LL}$ =1,378)에 비해 유의적으로 크고 교잡종들은 이 두 품종의 중간값( $b_{LC}$ =1,476, $b_{CL}$ =1,470)을 보인다. 가식육량의 경우도 계종간 증가양상이 체중의 경우와 비슷하였으나 육량증가의 회귀방정식에서 회귀계수의 크기가( $b_{LL}$ =1,563, $b_{LC}$ =1,651, b.$_{CL}$ =1,636, $b_{CC}$ =1,766) 체중에서 보다 컷는데 그 원인이 성장속도 차이때문인지를 구명하기 위해 주령(log x)과 체중에 대한 가식육량비율(log y) 간의 선형관계를 추정한 결과 각 계종의 회귀계수( $b_{LL=0.184}$, $b_{LC}$ =0.175, $b_{CL=0.165}$ 및 $b_{CC}$ =0.188)는 모두유의성이 인정되어 가식육의 증가속도는 체중의 증가속도보다 현저히 빠른 것으로 판명되었다. 3. 체중구성요소중 주령경과에 따라 그 중량비율이 증가되는 것은 우모, 복강지방, 흉부 및 퇴경부이고, 감소되는 것은 두부, 경부, 가식내장 및 부가식내장이며 방혈량, 각부, 익부 및 배부는 큰 변화를 보이지 않는다.

• Asian-Australasian Journal of Animal Sciences
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• 제19권12호
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• pp.1790-1798
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• 2006

Two experiments were conducted to investigate the effect of feeding cyanidin 3-glucoside (C3G) high black rice bran on nutrient digestibility, blood measurements, growth performance and pork quality of pigs. In Exp. I, a total of fifteen pigs (19.91${\pm}$1.80 kg, average initial body weight) were used in assay of nutrient digestibility and blood measurements. All pigs were allotted to 5 treatments with 3 replicates according to a completely randomized design (CRD) in an individual metabolic crate. Treatments included 1) CON: basal diet, 2) BRB-2: basal+brown rice bran 2%, 3) BRB-4: basal+brown rice bran 4%, 4) CRB-2: basal+C3G high black rice bran 2% and 5) CRB-4: basal+C3G high black rice bran 4%. The digestibility of dry matter (DM), crude protein (CP), crude fat (CF), crude ash (CA) and crude fiber (CF) was not affected by dietary treatments. Serum triglyceride (TG) and high density lipoprotein (HDL) cholesterol concentrations were not affected by addition of C3G high black rice bran. However, at the end of experiment, pigs fed rice bran showed decreased tendency in total cholesterol concentration. Especially pigs fed C3G high black rice bran showed significantly lower total cholesterol concentration compared to pigs fed brown rice bran (p<0.03). There was numerically lower total cholesterol concentration with increasing levels of black rice bran in the diet. In terms of serum glutamate oxaloacetate transaminase (GOT) and glutamate pyruvate transaminase (GPT), there were no significant differences among treatments, even though pigs fed CRB-4 showed the lowest GOT concentration compared to other pigs. In Exp. II, sixteen finishing pigs (average initial body weight 89.96${\pm}$0.35 kg) were divided into 4 treatments to investigate the effect of feeding C3G high black rice bran on growth performance and pork quality. There were no significant differences in average daily gain (ADG), average daily feed intake (ADFI) and feed conversion ratio (FCR) among the treatments. Pigs fed C3G high black rice bran showed numerical decrease in ADG and increase in FCR while not effecting feed intake. There was no significant difference in live weight, carcass weight, carcass rate, backfat thickness and carcass grade. However, pigs fed C3G high black rice bran tended to show lower backfat thickness than pigs fed basal diet. Pigs fed C3G high black rice bran showed a tendency of decreased TBA value than pigs fed basal diet, although there was no overall significant difference among treatments. In conclusion, nutrient digestibility, blood measurements, growth performance and pork quality were not significantly affected by feeding C3G high black rice bran to pigs. However, C3G high black rice bran might have an effect on lowering serum total cholesterol and decrease the TBA value in pork compared to control group and these effects might be due to high concentration of antioxidative compounds in C3G high black rice bran.

• 한국축산식품학회지
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• 제27권1호
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• pp.67-72
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• 2007

본 시험은 illite의 사료적 가치를 평가하기 위하여 illite를(0, 0.5, 1.0 및 2.0%) 삼원교잡종($Landrace{\times}Yorkshire{\times}Duroc$, 평균체중 $68.3{\pm}1.6 kg$) 비육돈 48두를 공시한 후 50일간 급여하여 증체량, 사료섭취량, 육등급과 도체율, 육의 pH, 육색, 지방색 및 지방산 함량을 분석하였다. 일당증체량과 사료섭취량 및 사료요구율은 illite를 첨가함으로서 증가하는 경향이지만 대조구를 포함한 모든 처리구에서 유의한 차이는 없었다. 도체중량과 도체율 및 등지방두께는 대조구를 포함한 모든 처리구에서 유의한 차이는 없었다. 그러나 A등급 출현율은 illite를 1.0% 첨가함으로서 대조구에 비하여 크게 증가하였다. 육의 수분, 조단백질 및 조회분 함량은 대조구를 포함한 모든 처리구에서 차이는 없었으나 조지방 함량은 illite를 1.0% 첨가할 경우 다른 처리구에 비하여 낮았다. 육의 pH는 대조구를 포함한 모든 처리구에서 5.55-5.68로 차이는 없었고 lllite의 첨가수준이 높을수록 육색의 명도($L^*$) 값은 낮았으며, 적색도($a^*$)와 황색도($b^*$) 값은 처리구간에 유의적인 차이는 없었다. 불포화지방산인 palmitoleic acid와 linoleic acid는 illite 1.0%구에서 유의적으로 높았으며(p<0.05), illite를 0.5-1.0% 급여함으로서 포화지방산 함량은 낮았고, 불포화지방산 함량은 높게 나타났다(p<0.05).

• 한국가금학회지
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• 제24권3호
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• pp.117-126
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• 1997

This study was conducted to estimate the hatching and growing performance, and heterosis of Korean Native Chicken(KNC), Rhode Island Red(RIR) and KNC XRIR crossbred. A total of 1,274 female pullets were produced from KNC, RIR and KNC x RIR crossbred kept in National Live-stock Research Institute, Korea. The experiment was conducted for 20 weeks from Sep. 2, 1995 to Jan. 20,1996. Hatchabilities of KNC dark brown strain x RlR(DR), KNC light brown strain x RlR (LR) and KNC dark black strain x RlR(BR) were 77.3%, 73.6% and 72.5%, respectively. Viabilities up to 20 weeks of age were not significantly (P>0.05) different among purebreds and crossbred. Body weights of DR, LR and BR were 1,890 g, 1,849 g and 1,967 g, respectively, at 20 weeks of age. The feed conversion ratio(feed /gain) of DR, LR, and BR were 5.88, 6.07 and 5.87, respectively, up to 20 weeks of age. Average shank lengths of DR, LR and BR were 97.1 mm, 98.9 mm and 99.4 mm, respectively, at 20 weeks of age. The heterosis effects were estimated to be -0. 48%, and 12.58%, respectively, in fertility and hatchability. Up to 20 weeks of age, the heterosis effects were estimated to be 0.07%, 13.49%, -5.77%, and 3.52% in viability, body weight, feed conversion ratio, and shank length, respectively.

• Asian-Australasian Journal of Animal Sciences
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• 제24권7호
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• pp.1001-1006
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• 2011

To determine the efficiency of copper (Cu) supplementation, a feeding experiment was carried out with 240 day old broiler chicks (vencobb-100). Birds were divided into four dietary treatments: i) C - no additives, ii) $T_1$-75 mg inclusion of Cu/kg diet, iii) $T_2$-150 mg inclusion of Cu/kg diet, iv) $T_3$-250 mg inclusion of Cu/kg diet. The present study was carried out in the Department of Animal Physiology, West Bengal University of Animal and Fishery Sciences, Kolkata, India for a period of 42 days (6 weeks). Growth performance was measured in terms of live weight gain, cumulative feed intake and feed conversion ratio at the end of $21^{st}$ and $42^{nd}$ day of the experiment and the result was found to be encouraging for commercial enterprises when the chickens were fed at 150 mg Cu/kg ($T_2$) of their diet. Excess dietary copper more than 150 mg/kg reduced the haemoglobin (Hb) concentration in blood and resulted in the accumulation of copper in the liver with decreased blood Hb concentration and packed cell volumes (PCV). Copper supplementation increased the total erythrocyte count (TEC) as copper is involved in erythropoiesis. But, from the result it is indicated that the dietary copper concentration could not alter the total leukocyte count (TLC). In case of different leucocytes count (DLC), there were no significant differences observed among the different treated groups. Statistical analysis showed significant (p<0.01) difference in plasma concentration of copper, zinc, ferrous and cholesterol among the different copper treated groups. The result indicates that supplementation of copper is an effective way of improving the production performance and haematological parameters in broiler chicken.

• Asian-Australasian Journal of Animal Sciences
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• 제6권4호
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• pp.601-605
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• 1993

This study was purposed to investigate the efficiency of protein utilization of rapeseed meal (RSM) and formaldehyde-treated RSM (TRSM) by sheep, and their influence on performance of growing heifers. Experiment 1 was conducted according to a double $3{\times}3$ Latin square design involving sex yearling Hu Sheep and three experimental diets. All diets contained 600 g ammoniated rice straw and 200 g concentrate mixture. Three dietary treatments were: (1) 100 g RSM + 40 g soybean meal (URUS), (2) 100 g TRSM + 40 g soybean meal (TRUS) and (3) 100 g TRSM + 40 g treated soybean meal (TRTS). Apparent nitrogen digestibility was significantly higher for diet TRUS than that for URUS or TRTS (p<0.05), but with no significant difference between URUS and TRTS (p>0.05). Proportion of nitrogen retention (NR) to the digestible nitrogen intake for diet TRUS and TRTS was 25.57 (p<0.05) and 23.44% (p<0.05) higher than that for URUS respectively. As a result, proportion of NR to nitrogen intake for diet TRUS and TRTS was 34.74 (p<0.05) and 23.78% (p<0.05) higher than that for URUS respectively. Experiment 2 was conducted with 59 Holstein heifers. They were 12-20 months of age at the start of the trial. The experiment was a $2{\times}2$ factorial trial in which the heifers were given the ammoniated rice straw ad libitum and 1.5 kg hay, and supplemented with either RSM or TRSM at a daily allowance of 1.2 or 1.8 kg per day. The live weight gains for heifers receiving 1.2 and 1.8 kg/d of RSM or TRSM were 0.491 and 0.556 or 0.564 and 0.665 kg/d, respectively. The results suggest that formaldehyde treatment can effectively improve the efficiency of protein utilization of rapessed meal and cattle's performance.

• 대한수의학회지
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• 제49권4호
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• pp.335-343
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• 2009

The pathogenicity and acute toxicity of Lactobacillus (L.) pentosus PL11 from eel (Anguilla japonica) were investigated using male and female Sprague-Dawley rats. The pathogenicity of L. pentosus PL11 was examined after treating the rats with $10^{11}$ CFU/mL, $10^9$ CFU/mL or $10^7$ CFU/mL doses of L. pentosus PL11 culture or 0.85% NaCl (Control) intragastrically. For acute toxicity studies, rats were treated with dried culture broth of L. pentosus PL11 at doses of 5,000 mg/mL, 2,500 mg/mL, 1,250 mg/mL or 625 mg/mL or Lactobacilli MRS broth (Control), and clinical signs or mortalities were monitored for two weeks. The results of the present investigation revealed no mortalities or obvious clinical signs in rats administered with the live bacterial cultures or dried culture broth at any investigated dose level. Also, no significant differences were observed in net body weight gain, gross pathological findings, feed and water consumption and body temperature among the different treatment groups and between the treated and control rats. It can be concluded from the above findings that L. pentosus PL11 is a safe probiotic strain with potential as feed additive to increase the feed efficiency or health of fish.